ADC module E-24 and UniChrom
Producer: JSC "L-card"
The module is an ADC block intended for connection to computer serial port with power supply from port (just like computer mouse). In module there are four (4) chips AD 7714 installed (24-bits sigma-delta ADC made by Analog Devices) and 8-bit RISC processor AVR made by ATMEL.
This instrument driver is designed as "Networked
Chromatograph"
TECHNICAL PARAMETERS
| ADC | |
| Number of channels | 8 channels (simultaneously working only 4 ADC channels) |
| Type / ADC resolution | Sigma-delta ADC AD 7714 / 24 bit |
| Effective resolution | 22 bits (at sampling rate of 5 Hz) |
| Input signal range | ± 2.5 V (programmatically set input
gain in range 1 to 128) |
| Data sampling rate, maximal | 1 kHz |
| Synchronisation | 4 input digital lines |
| Input protection | ± 10 V(power supply is on) ± 3 V (power supply is off) |
| Microcontroller | |
| Type | AVR 2313 |
| Data RAM | 128 bytes |
| Code RAM | 1 kbyte |
| Data exchange method | Serial port / data rate up to 57600 bps over 1.8 m cable / galvanic decoupling |
| Power supply | |
| Current reqirements | not more than 4 mA (powered from СОМ-port, when connecting to RS-232 port, which has not bipolar powering, it is needed external power supply block +12 V) |
| Size 122x70x28 mm | |